Re: whether this is valid

From: Joona I Palaste (palaste_at_cc.helsinki.fi)
Date: 06/26/04 

Date: 26 Jun 2004 21:01:16 GMT

madhur <madhur@sdf.com> scribbled the following:
> Hello

> char *a="str";
> strcpy(a,"abc");

> I have learnt that since "a" is a string literal, it might be allocated on
> read only memory on some implementations.
> Is it correct to modify a string literal using this way.

Not, it's not correct. It might work or "work" on some implementations
but that's due to either special allowances or sheer dumb luck. The
above code causes undefined behaviour and thus should never be relied
on. 

-- 
/-- Joona Palaste (palaste@cc.helsinki.fi) ------------- Finland --------\
\-- http://www.helsinki.fi/~palaste --------------------- rules! --------/
"As we all know, the hardware for the PC is great, but the software sucks."
   - Petro Tyschtschenko

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